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Homework Help: Acceleration and Distance

  1. Dec 22, 2015 #1
    1. The problem statement, all variables and given/known data
    A net force of 6.6 N east acts on a 9.0 kg object. If this object accelerates uniformly from rest to a velocity of 3.0 m/s east,

    How far did the object travel while accelerating?

    2. Relevant equations
    vf^2 = vi^2 + 2ad
    3. The attempt at a solution

    a= f/m


    a= 0.73333333333

    vf^2 = vi^2 + 2ad

    3 = 0 + 2(.733333)(d)

    3= 1.467d

    3/1.467 = about 2m
    But the answer key says 6.1 m west. What did I do wrong and why is it west?
  2. jcsd
  3. Dec 22, 2015 #2


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    Science Advisor
    Gold Member

    Just a small glitch in math.... you forgot to raise vf to the square. For direction just follow the path.
  4. Dec 22, 2015 #3


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    Science Advisor
    Homework Helper
    Gold Member

    It starts from rest. The force and velocity are both to the east. How can it move to the west?

    But anyway the question only asks "How far did the object travel while accelerating?" so the direction isn't required?
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